Hartmut Schirmer - Patch for Granlund's soft-fp lib (original) (raw)

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• From: "Hartmut Schirmer"
• To:
• Date: Mon, 30 Jun 2003 16:57:53 +0200
• Subject: Patch for Granlund's soft-fp lib

Hi,

Torbjorn Granlund published a soft-fp lib for GCC in 1999 (see http://gcc.gnu.org/ml/gcc/1999-07n/msg00553.html)

There's a bug in the float comparison routines. The patch below fixes this problem.

Hartmut

*** gieee/ieeelib.c Thu Mar 27 10:21:35 2003 --- ieeelib.c Mon Jun 30 12:41:16 2003

*** 116,122 **** do {
union real_extract_1 di;
di.d = (dbl);
! (exp) = ((di.u >> (MANTISSA_BITS - 1)) & EXP_MASK) ^ (di.u >> SIGN_POS);
(m) = (di.u & (((COMPUTE_TYPE) 1 << (MANTISSA_BITS - 1)) - 1)) << EXP_BITS;
} while (0)

--- 131,137 ---- do {
union real_extract_1 di;
di.d = (dbl);
! (exp) = ((di.u >> (MANTISSA_BITS - 1)) & EXP_MASK) ^ ((COMPUTE_STYPE)di.u >> SIGN_POS);
(m) = (di.u & (((COMPUTE_TYPE) 1 << (MANTISSA_BITS - 1)) - 1)) << EXP_BITS;
} while (0)

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  • Re: Patch for Granlund's soft-fp lib
    * From: Zack Weinberg